Combination house and auxiliary trailer apparatus

ABSTRACT

A combination house and auxiliary trailer including a house trailer for mounting an enclosure and supported on a pair of wheels and including a forwardly projecting tongue for connection with a towing vehicle. An auxiliary trailer includes a pair of raisable support wheels and elevating means for raising them from a ground engaging position to a ground clearing position and, further, includes a rearwardly projecting tongue for connection with a towing vehicle. Support means is provided for engaging the front extremity of the auxiliary trailer with the rear extremity of the house trailer to support such auxiliary trailer cantileverally therefrom whereby the two trailers may be coupled together and the raisable wheels of the auxiliary trailer raised to their ground clearing position and the trailers towed as a unit. Alternatively, the raisable wheels may be lowered to their ground engaging position and the trailers uncoupled to be towed independently of one another. The enclosure may include an extendable portion which may be selectively extended when the trailers are separated to occupy the space occupied by the auxiliary trailer when the trailers are coupled together to thereby provide an enlarged enclosure for use as living quarters.

United States Patent Bledsoe Mar. 14, 1972 [54] COMBINATION HOUSE ANDAUXILIARY TRAILER APPARATUS Sherman H. Bledsoe, 2606 Rosewood Avenue,Apt. 4, Santa Ana, Calif. 92708 [22] Filed: Sept. 8, 1969 [21] Appl.No.:855,906

[72] Inventor:

Bledsoe Primary ExaminerPhilip Goodman Att0rneyFulwider, Patton, Rieber,Lee & Utecht [57] ABSTRACT A combination house and auxiliary trailerincluding a house trailer for mounting an enclosure and supported on apair of wheels and including a forwardly projecting tongue forconnection with a towing vehicle. An auxiliary trailer includes a pairof raisable support wheels and elevating means for raising them from aground engaging position to a ground clearing position and, further,includes a rearwardly projecting tongue for connection with a towingvehicle. Support means is provided for engaging the front extremity ofthe auxiliary trailer with the rear extremity of the house trailer tosupport such auxiliary trailer cantileverally therefrom whereby the twotrailers may be coupled together and the raisable wheels of theauxiliary trailer raised to their ground clearing position and thetrailers towed as a unit. Alternatively, the raisable wheels may belowered to their ground engaging position and the trailers uncoupled tobe towed independently of one another. The enclosure may include anextendable portion which may be selectively extended when the trailersare separated to occupy the space occupied by the auxiliary trailer whenthe trailers are coupled together to thereby provide an enlargedenclosure for use as living quarters.

15 Claims, 18 Drawing Figures 3 Sheets-Sheet l mwE ToR. .SHe'eMA/V H. 340 305 BY w J Patented March 14, 1972 3,649,064

3 Sheets-Sheet 2 FIG.|O

I NVENTOR. .S'x/aeAm/v It 34 50.305

flrrae/ve s Patented March 14, 1972 3,649,064

5 Sheets-Sheet 5 FIGJT FIG.|8

INVENTOR. SlE/Vfi/V ll. 25050:

flrraewm COMBINATION HOUSE AND AUXILIARY TRAILER APPARATUS BACKGROUND OFTHE INVENTION 1. Field of the Invention:

The present invention relates generally to trailers and moreparticularly to a pair of trailers which may be connected together andthe wheels of one raised to a ground clearing position so one trailer issupported entirely from the other.

2. Description of the Prior Art:

My pending application Ser. No. 811,076, filed Mar. 27, 1969, now US.Pat. No. 3,556,582 issued Jan. 19, 1971, discloses a house and boattrailer combination wherein the house trailer and boat trailer may becoupled together for towing as a unit. However, combinations of thistype suffer the shortcoming that the support wheels of both vehicles arein contact with the ground when the trailers are in their coupledcondition thereby causing certain instability when the apparatus istowed. This instability renders the apparatus impractical for generaluse in many States because of the rather serious limitations placedthereon. For example, the California Vehicle Code Section No. 21715specifies that it is illegal to tow such a combination with anypassenger vehicle regardless of weight, or with any other motor vehiclehaving an unladen weight of less than 4,000 pounds.

SUMMARY OF THE INVENTION The present invention is characterized by ahouse trailer for supporting an enclosure and is, itself, supported on apair of support wheels and, further, including a forwardly projectingtongue, An auxiliary trailer supported from a pair of wheels which aremovable between a lowered ground engaging position and a raised groundclearing position and means is provided for coupling the trailerstogether with the auxiliary trailer supported cantileverally from thehouse trailer whereby such trailers may be coupled together and theauxiliary trailer wheels raised to their ground clearing position andthe combination of trailers towed as a unit.

An object of the present invention is to provide a trailer apparatus ofthe type described which includes one trailer for supporting anenclosure defining living quarters and a second trailer for supporting aboat whereby the apparatus may be towed as a unit or, alternatively,either of said trailers may be towed independently of the other.

It is another object of the present invention to provide an apparatus ofthe type described wherein the wheels of the auxiliary trailer may beelevated to a position clear of the ground when such trailers arecoupled together.

It is a further object of the present invention to provide an apparatusof the type described wherein the enclosure mounted on the house trailermay be conveniently expanded to form an enlarged closure.

It is still another object of the present invention to provide a trailerapparatus of the type described that includes means fro convenientlyaligning the trailers for being coupled together.

These and other objects and the advantages of the present invention willbecome apparent from a consideration of the following detaileddescription when taken in conjunction with the accompanying drawings.

DESCRIPTION OF THE DRAWINGS FIG. 6 is an elevational side view of thecombination house and auxiliary trailer shown in FIG. 5, the enclosureon the house trailer being shown in an extended position;

FIG. 7 is a vertical sectional view of the house trailer frame includedin the combination house and boat trailer apparatus shown in FIG. 1,such view being taken directly behind the supporting tires;

FIG. 8 is a vertical sectional view, in enlarged scale, of an elevatingmeans utilized to raise and lower the wheels included in the auxiliarytrailer shown in FIG. I;

F IG. 9 is a vertical sectional view similar to FIG. 8 but showing theelevating means in a raised position;

FIG. 10 is a vertical sectional view taken along the line 10- 10 of FIG.8;

FIG. 11 is a horizontal sectional view, in enlarged scale, taken alongthe line 11-11 ofFIG. 8;

FIG. 12 is a horizontal sectional view, in enlarged scale, taken alongthe line 12-12 of FIG. 6;

FIG. 13 is a vertical sectional view, in enlarged scale, taken along theline 13-13 of FIG. 12;

FIG. 14 is a vertical sectional view taken along the line I4 14 of FIG.13;

FIG. 15 is a diagrammatic plan view of coupling bars included in thecombination house and boat trailer apparatus shown in FIG. 1;

FIG. 16 is a vertical sectional view, in enlarged scale, takenlongitudinally through the coupling bars shown in FIG. 15;

FIG. 17 is a broken vertical sectional view, in enlarged scale, takenalong the line 17 17 of FIG. 12;

FIG. 18 is a partial elevational side view of a modification of thecombination house and auxiliary trailer apparatus shown in FIG. 5.

DESCRIPTION OF THE PREFERRED EMBODIMENT The combination house andauxiliary trailer apparatus of present invention includes, generally, ahouse trailer 31 supported on a pair of tandem wheels 33 and anauxiliary trailer 37 including raisable wheels 39 which may be loweredselectively to the ground engaging position shown in broken lines inFIG. 1 for supporting such trailer 37 or, alternatively, may be raisedto the elevated position shown in solid lines when the trailers 31 and37 are coupled together thereby leaving the trailer 37 supportedcantileverally from the rear extremity of the house trailer 31 and whena campsite, or the like, is reached, the house trailer 31 may be parkedand the wheels 39 of the auxiliary trailer 37 lowered to their groundengaging position and the trailers uncoupled so the auxiliary trailer 37may be towed independently of the house trailer 31 for transporting aboat 43, or the like, thereby enabling the house trailer 31 to remainparked and freeing the towing vehicle for transportation and/or towingof the trailer 37.

The frame of the house trailer 31 includes a pair of parallel inwardlyopening side channels 51 which have confronting C- channels affixed inthe rear extremities thereof to define tracks 53 (FIGS. 2-4) which areopen at their rear extremities for receipt of rollers 55 carried onsimilar side channels 59 of the auxiliary trailer 37. Supported adjacentthe forward extremity of the side channels 59 of the auxiliary trailer37 is a mounting bracket 63 supported on a pivot pin 65 and carryingrollers 67 disposed at opposite ends thereof whereby such bracket 63 isfree to rotate on its pivot pin 65 to angle the bracket 63 for alignmentof the rollers 67 to ride on the flares 68 formed at the rear extremityof the respective tracks 63.

The side channels 51 angle inwardly at their front extremity and areconnected together to form a tongue carrying a hitch socket 71. A jack73 is carried from the tongue and has a castor wheel 75 mounted on itsbottom end so the trailer 31 can be maneuvered around while its frontend is supported on such jack.

Referring to FIGS. 8 and 9, the auxiliary trailer 37 includes a pair ofintermediate transverse front and rear channels 81 and 83, respectively,which are welded on their opposite ends to the longitudinal channels 59.A laminated leaf spring assembly 85 is pivotally carried at its rearextremity from a pivot pin 87 mounted on the rear transverse channel 83and includes a framework formed by a forwardly and rearwardly extendingangle 91 having its front extremity connected with the front extremityof the laminated leaf spring by means of a vertical link 93. Rigidlyaffixed to the horizontal angle 91 intermediate its ends is an upwardlyand forwardly projecting angle forming a ramp 97 for receipt between acylindrical slider 101 mounted on the channel 51 of the house trailer 31and a lifting roller 103, likewise, mounted on such channel 51.

Referring to FIGS. 9 and 11', afiixed to the upper side of thetransverse channel 81 is a lock, generally designated 107, whichincludes a rearwardly opening barrel 109 that contains a reciprocablebolt 111 which is biased rearwardly to normally project over the forwardextremity of the horizontal angle 91. Still referring to FIG. 11, ahorizontally disposed actuating arm 115 is pivotally carriedintermediate its ends from a mounting bracket 117 by means of a pivotpin 119 and has its one end formed with a slot 121 which receives a pin123 extending from the reciprocable bolt 111 and through a longitudinalslot 127 in the wall of the barrel 109. The opposite extremity of theactuating arm 115 carries a roller 129 which engages an angled stop 131mounted on the house trailer 31 when the trailers are brought intoengagement with one another whereby the reciprocable bolt 11 1 will beretracted to enable the auxiliary trailer wheels 39 to be raised totheir ground clearing position.

Referring to FIG. 1, the side channels 59 of the auxiliary trailer 37are angled together at their rear extremity to form a towing tonguewhich mounts a hitch socket 132. A jack 134 is carried from the tongueand carries a castor wheel 136 on its bottom extremity. Formed pads 138are mounted on the trailer 37 to receive the boat 43.

Referring to FIGS. 1 and 7, an undercarriage, generally designated 137,includes a pair of longitudinal side angles which support the sidechannels 51 of the house trailer 31. The side angles of theundercarriage 137 include three removable adjustment pins 141 which arereceived in selected ones of a plurality of bores 143 in the sidechannels 51 of the house trailer 31 to maintain the undercarriage inlongitudinal adjustment under such trailer to provide the desired weightdistribution on the wheels 33.

The house trailer mounts an enclosure, generally designated 145, whichhas an elevated rearwardly projecting open bottom overhang 147 thatincludes an open top telescopical section 149 formed with a floor 151whereby such section may be telescoped downwardly when the auxiliarytrailer 37 is disconnected from the house trailer 31 to position thefloor 151 coplanar with the floor in the remainder of the enclosure 145and cooperate with the overhang 147 to thereby provide extended livingroom within the enclosure 145. A winch 152 is mounted at the front ofthe enclosure 145 and winds a cable 154 thereon which extends rearwardlyunder the enclosure for coupling with the front of the auxiliary trailer37.

In operation, the house trailer 31 may be positioned with its jack 73lowered to maintain the frame horizontal as shown in FIG. 1 and theretractable section 149 may be telescoped upwardly into the overhang 147by a winch or any other acceptable means. The auxiliary trailer 37 maythen be backed into position at the rear of the house trailer 31, thecable 154 attached thereto, and the winch 154 rotated to draw the frontextremity of the auxiliary trailer telescopically into the rearextremity of the house trailer. As the trailers 31 and 37 are drawntogether the lead rollers 67 will engage the respective flares 68 andpivot the brackets 63 to lead the remaining rollers 55 into therespective tracks 53 where they will be retained by the C-channels tocantileverally support the trailer 37.

Referring to FIG. 11, as the auxiliary trailer 37 is moved forwardlyinto engagement with the rear extremity of the house trailer 31, thelock 107 will be actuated by the roller 129 on the actuating arm 115engaging the inclined stop 131 to thereby pivot such actuating arm toretract the bolt 11 clear of the front extremity of the horizontal angle91 of the laminated leaf spring assembly 85. Immediately after the bolt111 is retracted, the ramp 97 (FIG. 8) engages the lifting roller 103and continued telescoping of the auxiliary trailer 37 into the rearextremity of the boat trailer 31 causes the rear extremity of thelaminated leaf spring assembly to be lifted upwardly into the positionshown in FIG. 9 thereby raising the wheels 39 and transferring theentire weight of the auxiliary trailer to the rollers 55 on the track 53and, further, raising the wheels 39 to their ground clearing positionshown in solid lines in FIG. 1.

A towing vehicle may be then connected to the hitch socket 71 of thehouse trailer 31 and the entire combination towed as a unit. It is ofparticular importance that the auxiliary trailer wheels 39 are raisedclear of the ground to thereby reduce instability and assure that thecombination may be towed by a conventional passenger vehicle. Further,it should be noted that the telescoping together of the trailers 31 and37 provide a relatively short overall length thereby bringing thecombination within the restrictions of many vehicle codes for towing bypassenger vehicles and without a special operatorpermit.

When the destination is reached, as for instance a trailer park, thetrailer 31 may be parked and the auxiliary trailer 37 uncoupledtherefrom and such auxiliary trailer moved clear of the house trailer31. Referring to FIG. 9, as the boat trailer 37 is moved rearwardly, theupwardly and rearwardly projecting ramp 97 will engage the overlyingslider 101 carried from the house trailer 31 and will force such rampdownwardly thereby pivoting the laminated leaf spring assembly 85downwardly about the pivot pin 87 thereby lowering the axle 89 andbringing the wheels 39 into engagement with the ground and transferringthe weight of the boat trailer 37 from the rollers 55 in the tracks 53to such wheels. As the laminated leaf spring assembly 85 reaches itslowest position shown in FIG. 8, the roller 129 (FIG. 11) will clear thestop 131 and enable the reciprocable bolt 111 to be biased forwardly tothereby engage above the rear extremity of the horizontal angle 91 tolock the spring assembly 85 to its lowered position and maintain thewheels 39 locked down. The auxiliary trailer 37 may then be towed totransport the load, for instance, the boat 43. Further, the telescopicalportion 149 of the enclosure may be lowered to provide additional livingspace.

Referring to FIGS. 5 and 6, the house and auxiliary trailer combinationshown therein is similar to that shown in FIG. 1 except that it includesa boat trailer, generally designated 161, which is formed with parallelforwardly and rearwardly extending rails 163 and 165 (FIGS. 13 and 16)which mount a camper carriage, generally designated 169, by means ofrespective rollers 171 and 173. Mounted on the carriage 169 is amodification of a conventional camper, generally designated 175.Supported at the front extremity of the house trailer 161 is a false endwall 177. Referring to FIG. 6, connected between the false end wall 177and the rear wall of the camper are canvas top and side walls 181 and183, respectively, which are extended by the rearward movement of thecamper 175 on the rearwardly moving carriage 169 to form a temporaryclosure at the forward extremity of the camper 175.

One side wall 183 includes vertical zippers 185 on opposite ends thereoffor being unzipped to form a canopy which may have its bottom extremitystretched outwardly to a covering position. The same side wall 183includes a transparent window 189 which has a rolled blind 171 securedthereover.

Referring to FIG. 13, a false floor, generally designated 191, isaffixed to the front portion of the house trailer 161 and include a pairof parallel longitudinal slots and 197 which are aligned over therespective rails 163 and 165 for projection of the rollers 173 when thecamper 175 is moved forwardly over such floor 191. The floor 191 isconveniently carpeted and a pair of inserts 201 and 203 are provided forinsertion in the respective slots 163 and 165 and are also carpeted tomatch the carpeting of the floor 191.

Referring to FIG. 17, a drawing chain 205 extends along one side of thehouse trailer 161 and has its opposite ends affixed thereto. A pair ofadjacent idler sprockets 207 and 209 are supported from the enclosure175 and the intermediate portion of the chain 205 extends upwardlytherebetween and threads over a drive sprocket 211 supported on one endof a horizontal shaft 213 disposed intermediately at the front of thecamper 175. Referring to FIG. 6, the opposite end of the horizontalshaft 213 is coupled with a gear box 217 which has a drive handle 219connected therewith for rotation of the shaft 213 to move the camperforwardly and rearwardly on the trailer 161.

Referring to FIGS. 15 and 16, a pair of telescopical bars, generallydesignated 225 and 227, are pivotally connected at their rear extremityto the front of the auxiliary trailer 37 and include respectiveextendable rods 231 and 233 which are formed with ratchet teeth 235which are engaged by a pawl 237 carried on a pivot pin 239 and biased toits latching position by a compression spring 241. The front extremitiesof the bars 225 and 227 may be secured to the rear extremity of thecamper 175 by means of connecting bolts 245, and 247, respectively.

Thus, the house and auxiliary trailers shown in FIGS. 5 and 6 arecoupled together and the auxiliary trailer wheels 39 elevated to theposition shown in FIG. 5 for convenient towing of the unit from thetongue of the house trailer 16]. Again, when the destination is reachedthe house trailer 161 is parked and the auxiliary trailer 37 uncoupledtherefrom Such uncoupling may be accomplished by rotating the drivecrank 219 to move the camper 175 rearwardly on the rails 163 and 16Sthereby stretching the canvas walls 181 and 183 whereby such walls willcooperate with the false end wall 177 and false floor 191 to provide aroom at the front end of the camper 175. The inserts 201 and 203 maythen be placed in the respective slots 163 and 165 to provide a uniformfloor. Paraphernalia stored in the camper 175 may then be moved ontosuch floor to thereby leave the camper free for cooking, eating and thelike.

With the auxiliary trailer 37 in the position shown in FIG. 6, the frontextremity of the coupling bars 225 and 227 may then be disconnected fromthe rear extremity of the camper 175 and such coupling bars pivoted to astorage position extending transversely across the front of theauxiliary trailer 37. The auxiliary trailer 37 is then free to be towedindependently and also, the towing vehicle is freed from the trailer 161for independent transportation.

When the trailers 31 and 37 are to be coupled together, the auxiliarytrailer 37 may be backed into position at the rear of the house trailer31 and the front extremities of the coupling bars 225 and 227 connectedwith such house trailer. In this regard, it is important that thecoupling bars 225 and 227 are pivotable and may be telescoped wherebythe trailers may be slightly out of alignment, as shown in FIG. 15, andthe coupling bars 225 and 227 connected therewith. The trailers may thenbe easily aligned and continued backing of the auxiliary trailer 37 willtelescopically collapse both coupling bars 225 and 227 and the ratchetpawls 237 will prevent extension thereof. With the inserts 201 and 203(FIG. 12) removed, the drive crank 219 (FIG. 6) may be rotated to pullthe camper 175 forwardly on the trailer 161 thereby pulling theauxiliary trailer 227 into telescopical engagement with such housetrailer 161 and raising the wheels 39 to their ground clearing positionas described hereinabove.

The house and auxiliary combination shown in FIG. 18 is similar to thatshown in FIG. 5 except that the auxiliary trailer, generally designated250, includes a pair of parallel ramps 252 which receive the wheels of adune buggy 254 whereby such dune buggy may be transported in conjunctionwith the camper 175.

From the foregoing it will be apparent that the combination house andauxiliary trailer of present invention provide a particularly convenientmeans for towing a house trailer or camper and boat behind aconventional passenger vehicle. Further, the combination is separablewhen the destination is reached whereby the house trailer may be parkedand the towing vehicle will be free for general conveyance therebyeliminating the inconvenience normally associated with a camper whereinthe camper must be readied for travel whenever any errands are to be runor a boat trailer is to be towed to or from a launching area. Also, thewheels of the auxiliary trailer are automatically raised when thetrailers are coupled together. Further, the telescopical interconnectionof the trailers, in conjunction with extension of collapsible portionsof the closure, provide extra room which would not normally be availablein conventional campers.

Various modifications and changes may be made with regard to theforegoing detailed description without departing from the spirit ofinvention.

Iclaim:

1. Combination house and auxiliary trailer apparatus for use with anenclosure defining living quarters, said apparatus comprising:

a house trailer for carrying said enclosure and including a first pairof wheels supporting said house trailer and formed with a forwardlyprojecting tongue for connecting the front end of said house trailer toa towing vehicle;

an auxiliary trailer including raisable wheels for supporting saidauxiliary trailer when it is uncoupled from said house trailer;

elevating means permanently mounting said raisable wheels on saidauxiliary trailer and operative to selectively lower said raisablewheels to a ground engaging support position and to raise said raisablewheels to a ground clearing position;

coupling means for coupling the front extremity of said auxiliarytrailer to the rear extremity of said house trailer to support saidauxiliary trailer cantileverally from said house trailer with the rearextremity of said auxiliary trailer projecting rearwardly from saidhouse trailer whereby said house and auxiliary trailers may be coupledtogether and said elevating means operated to raise said raisable wheelsto said ground clearing position so said apparatus may be towed as aunit and, alternatively, said raisable wheels may be lowered to theirground engaging position to support said auxiliary trailer and saidauxiliary trailer uncoupled from said house trailer and towedindependently therefrom.

2. Combination house and auxiliary trailer apparatus is set forth inclaim 1 wherein:

said auxiliary trailer includes means for supporting a boat thereon.

3. Combination house and auxiliary trailer apparatus as set forth inclaim 1 wherein:

said elevating means includes an axle carrying said raisable wheels onits opposite extremities, a lock carried on said auxiliary trailer forengaging said elevating means to lock said raisable wheels in theirground engaging position and including an actuating arm; and

a stop supported on said house trailer for engaging said actuating armduring coupling together of said trailers to release said lock and freesaid raisable wheels to be elevated to their ground clearing position.

4. Combination house and auxiliary trailer apparatus as set forth inclaim 1 wherein:

said elevating means includes a vertically movable member connected withsaid raisable wheels, a forwardly and upwardly inclined ramp affixed tosaid movable member, and a lifter mounted on said house trailer forengagement under said ramp during coupling together of said trailers tolift said ramp and raise said movable member to elevate said raisablewheels to their ground clearing position. 5. Combination house andauxiliary trailer apparatus as set forth in claim 1 wherein:

said coupling means includes a pair of telescopical bars pivotallyconnected on their respective rearward extremities to the forwardextremity of said house trailer and including latching means forlatching said respective bars in selected telescoped positions;

and said auxiliary trailer includes means on its front extremity forcoupling the rear extremity of said respective bars thereto whereby saidauxiliary trailer may be backed into position adjacent said housetrailer, said bars extended and coupled with said auxiliary trailer andsaid auxiliary trailer backed farther toward said house trailer totelescope said bars and said latching means latched to latch said barsin their telescoped position.

6. Combination house and auxiliary trailer apparatus as set forth inclaim 1 wherein:

forth in claim 1 wherein:

said house trailer includes a pair of transversely spaced apartrearwardly projecting tracks; and

said auxiliary trailer includes rollers carried on opposite sidesthereof for receipt in said tracks.

8. Combination house and auxiliary trailer apparatus as set forth inclaim 1 wherein:

said elevating means includes a lever arm pivotally connected at itsrearward extremity to said house trailer and projecting forwardly fromits connecting point, axle means mounting said raisable wheels on saidlever arm, an upwardly and forwardly projecting ramp affixed to saidlever arm and a lifter mounted on the rear extremity of said lever armand elevate said raisable wheels to their ground clearing positionthereby transferring the weight of said auxiliary trailer to said housetrailer.

9. Combination house and auxiliary trailer apparatus as set forth inclaim 1 wherein:

said elevating means includes a vertically movable member connected withsaid raisable wheels, a forwardly and upwardly inclined ramp affixed tosaid movable member and a slider mounted on said house trailer forengagement on the top surface of said ramp to force said movable memberdownwardly as said trailers are moved apart to lower said raisablewheels to their ground engaging position.

10. Combination house and auxiliary trailer apparatus as set forth inclaim 1 wherein:

said house trailer includes a wheel mount carried by said first pair ofwheels and shiftable longitudinally with respect to said house trailerand means for securing said wheel mount in selected positions relativeto said house trailer whereby said wheels included in said house trailermay be shifted longitudinally under said house trailer to adjust theweight distribution thereon.

11. Combination house and auxiliary trailer apparatus as set forth inclaim 3 wherein:

said lock includes a bolt normally biased to its extended position forengagement with said movable member to lock said raisable wheels intheir ground engaging position and coupled with said actuating arm.

12. Combination house and auxiliary trailer apparatus as set forth inclaim 4 wherein:

said house trailer includes means for drawing said auxiliary trailerinto position for coupling therewith. 13. Combination house andauxiliary trailer apparatus as set forth in claim 4 wherein:

said house trailer includes a slider for engagement over said ramp forurging it downwardly during uncoupling of said trailers to lower saidraisable wheels to their ground en- 4gagingbpositions. 1 om matron houseand auxiliary trailer apparatus as set forth in claim 5 wherein:

said telescopical bars include ratchet means providing for free collapseof said bars and normally limiting extension thereof.

15. Combination house and auxiliary trailer apparatus as set forth inclaim 6 wherein:

said end wall is disposed at The front extremity of said house trailerand said house trailer is formed with transversely spaced apart,longitudinally projecting rails for supporting said movable portion forrearward movement to said extended position; and

the forward extremity of said auxiliary trailer is formed for beingreceived between said rails when said trailers are coupled together.

1. Combination house and auxiliary trailer apparatus for use with anenclosure defining living quarters, said apparatus comprising: a housetrailer for carrying said enclosure and including a first pair of wheelssupporting said house trailer and formed with a forwardly projectingtongue for connecting the front end of said house trailer to a towingvehicle; an auxiliary trailer including raisable wheels for supportingsaid auxiliary trailer when it is uncoupled from said house trailer;elevating means permanently mounting said raisable wheels on saidauxiliary trailer and operative to selectively lower said raisablewheels to a ground engaging support position and to raise said raisablewheels to a ground clearing position; coupling means for coupling thefront extremitY of said auxiliary trailer to the rear extremity of saidhouse trailer to support said auxiliary trailer cantileverally from saidhouse trailer with the rear extremity of said auxiliary trailerprojecting rearwardly from said house trailer whereby said house andauxiliary trailers may be coupled together and said elevating meansoperated to raise said raisable wheels to said ground clearing positionso said apparatus may be towed as a unit and, alternatively, saidraisable wheels may be lowered to their ground engaging position tosupport said auxiliary trailer and said auxiliary trailer uncoupled fromsaid house trailer and towed independently therefrom.
 2. Combinationhouse and auxiliary trailer apparatus is set forth in claim 1 wherein:said auxiliary trailer includes means for supporting a boat thereon. 3.Combination house and auxiliary trailer apparatus as set forth in claim1 wherein: said elevating means includes an axle carrying said raisablewheels on its opposite extremities, a lock carried on said auxiliarytrailer for engaging said elevating means to lock said raisable wheelsin their ground engaging position and including an actuating arm; and astop supported on said house trailer for engaging said actuating armduring coupling together of said trailers to release said lock and freesaid raisable wheels to be elevated to their ground clearing position.4. Combination house and auxiliary trailer apparatus as set forth inclaim 1 wherein: said elevating means includes a vertically movablemember connected with said raisable wheels, a forwardly and upwardlyinclined ramp affixed to said movable member, and a lifter mounted onsaid house trailer for engagement under said ramp during couplingtogether of said trailers to lift said ramp and raise said movablemember to elevate said raisable wheels to their ground clearingposition.
 5. Combination house and auxiliary trailer apparatus as setforth in claim 1 wherein: said coupling means includes a pair oftelescopical bars pivotally connected on their respective rearwardextremities to the forward extremity of said house trailer and includinglatching means for latching said respective bars in selected telescopedpositions; and said auxiliary trailer includes means on its frontextremity for coupling the rear extremity of said respective barsthereto whereby said auxiliary trailer may be backed into positionadjacent said house trailer, said bars extended and coupled with saidauxiliary trailer and said auxiliary trailer backed farther toward saidhouse trailer to telescope said bars and said latching means latched tolatch said bars in their telescoped position.
 6. Combination house andauxiliary trailer apparatus as set forth in claim 1 wherein: saidenclosure includes a false end wall, a false floor fixed in position anda movable enclosure portion selectively movable longitudinally to aposition over said false floor and to an extended position at one end ofsaid false floor and collapsible walls interconnecting the side and topwalls of said movable portion with said false end wall whereby saidcollapsible walls will cooperate with said false end wall and saidmovable portion when said movable portion is in its extended position toform additional living space.
 7. Combination house and auxiliary trailerapparatus as set forth in claim 1 wherein: said house trailer includes apair of transversely spaced apart rearwardly projecting tracks; and saidauxiliary trailer includes rollers carried on opposite sides thereof forreceipt in said tracks.
 8. Combination house and auxiliary trailerapparatus as set forth in claim 1 wherein: said elevating means includesa lever arm pivotally connected at its rearward extremity to said housetrailer and projecting forwardly from its connecting point, axle meansmounting said raisable wheels on said lever arm, an upwardly andforwardly projecting ramp affixed to said lever arm and a lifter mountedon The rear extremity of said lever arm and elevate said raisable wheelsto their ground clearing position thereby transferring the weight ofsaid auxiliary trailer to said house trailer.
 9. Combination house andauxiliary trailer apparatus as set forth in claim 1 wherein: saidelevating means includes a vertically movable member connected with saidraisable wheels, a forwardly and upwardly inclined ramp affixed to saidmovable member and a slider mounted on said house trailer for engagementon the top surface of said ramp to force said movable member downwardlyas said trailers are moved apart to lower said raisable wheels to theirground engaging position.
 10. Combination house and auxiliary trailerapparatus as set forth in claim 1 wherein: said house trailer includes awheel mount carried by said first pair of wheels and shiftablelongitudinally with respect to said house trailer and means for securingsaid wheel mount in selected positions relative to said house trailerwhereby said wheels included in said house trailer may be shiftedlongitudinally under said house trailer to adjust the weightdistribution thereon.
 11. Combination house and auxiliary trailerapparatus as set forth in claim 3 wherein: said lock includes a boltnormally biased to its extended position for engagement with saidmovable member to lock said raisable wheels in their ground engagingposition and coupled with said actuating arm.
 12. Combination house andauxiliary trailer apparatus as set forth in claim 4 wherein: said housetrailer includes means for drawing said auxiliary trailer into positionfor coupling therewith.
 13. Combination house and auxiliary trailerapparatus as set forth in claim 4 wherein: said house trailer includes aslider for engagement over said ramp for urging it downwardly duringuncoupling of said trailers to lower said raisable wheels to theirground engaging positions.
 14. Combination house and auxiliary trailerapparatus as set forth in claim 5 wherein: said telescopical barsinclude ratchet means providing for free collapse of said bars andnormally limiting extension thereof.
 15. Combination house and auxiliarytrailer apparatus as set forth in claim 6 wherein: said end wall isdisposed at the house trailer and said house trailer is formed withtransversely spaced apart, longitudinally projecting rails forsupporting said movable portion for rearward movement to said extendedposition; and the forward extremity of said auxiliary trailer is formedfor being received between said rails when said trailers are coupledtogether.